Details

Properties and Benefits:

St. ASTIERNHL5

NHL 5 offers the maximum strength of the 3 classifications for NHL (Natural Hydraulic Lime) and as such we would advise caution as to exactly where it’s used. While it can be used for most typical mortar applications especially those in more aggressive environments, and only then onto suitable, durable backgrounds; this is a binder with limitations in conservation. However, it will make an appropriate masonry mortar for marine applications including those within the tidal zone or flow in rivers etc. It works extremely well for other applications where durability is a requirement such as wall capping, chimney flaunching or works below ground where sulphates may be present. It’s used extensively for Lime Concretes.

Working temperatures: not below 5 deg C or above 30 deg C. Make sure that high suction materials are thoroughly dampened before application. Avoid rapid drying due to high temperatures or strong winds using appropriate curing methods. Protect fresh mortar from frost, rain, direct sun and strong wind for a minimum of 48 hours depending on the time of year; please refer to CLC document Curing Lime Based Renders & Mortars.

2017 will be our 20th year of selling St. Astier during which time we have sold many hundreds of Tonnes of NHL 5 and will continue to market & sell this product for many years to come, where appropriate. Manufactured in France by a company with a global reputation for its product, Cornish Lime are very proud to have been amongst the first to be associated with them here in the UK.